Hairbrush



FIG. 1 shows a perspective view of on embodiment of our design for a hairbrush;

FIG. 2 shows a side view thereof;

FIG. 3 shows a side view thereof rotated 90°;

FIG. 4 shows a side view thereof rotated 180° from FIG. 3;

FIG. 5 shows a front end view thereof;

FIG. 6 shows a rear end view thereof;

FIG. 7 shows a perspective view of another embodiment of our design for a hairbrush;

FIG. 8 shows a side view thereof;

FIG. 9 shows a side view thereof rotated 90°;

FIG. 10 shows a side view thereof rotated 180° from FIG. 9;

FIG. 11 shows a front end view thereof; and,

FIG. 12 shows a rear end view thereof. 

The ornamental design for a hairbrush, as shown and described. 